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2010年第二届中国科学院博士后学术年会暨高新技术前沿与发展学术会议

作者：赵春花中国科学院上海硅酸盐研究所

A large area cathode-supported electrolyte film,comprising porous(La0.8Sr0.2) 0.95MnO3(LSM95) cathode substrate,LSM95/ Zr0.89Sc0.1Ce0.01O2-x(SSZ) cathode active layer,and SSZ electrolyte,has been successfully fabricated by tape casting and co-sintering *** interface reaction between cathode and electrolyte was inhibited by using A-site deficient LSM.A dense enough SSZ thin film with a thickness of～26μm was obtained at 1250℃. By using Pt as anode,the obtained single cell reached the maximum power density of 0.54 W cm-2 at 800℃in O2/humidified H2,with open circuit voltage(OCV) value of 1.08 V.

关键词： Solid oxide fuel cell(SOFC) Cathode-supported Tape casting co-sintering Scandia-stabilized zirconia(SSZ)

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Viability of all-solid-state lithium metal battery coupled with oxide solid-state electrolyte and high-capacity cathode

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Journal of Energy Chemistry 2024年第4期91卷 122-131页

作者： Xingxing Jiao Xieyu Xu Yongjing Wang Xuyang Wang Yaqi Chen Shizhao Xiong Weiqing Yang Zhongxiao Song Yangyang Liu Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031SichuanChina State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an 710049ShaanxiChina Department of Physics Chalmers University of TechnologyGöteborgSE 41296Sweden

Owing to the utilization of lithium metal as anode with the ultrahigh theoretical capacity density of 3860 mA h g^(-1)and oxide-based ceramic solid-state electrolytes(SE),e.g.,garnet-type Li7La_(3)Zr_(2)O_(12)(LLZO),all-state-state lithium metal batteries(ASLMBs)have been widely accepted as the promising alternatives for providing the satisfactory energy density and ***,its applications are still challenged by plenty of technical and scientific *** this contribution,the co-sintering temperature at 500℃is proved as a compromise method to fabricate the composite cathode with structural integrity and declined capacity fading of LiNi_(0.5)co_(0.2)Mn_(0.3)O_(2)(NCM).On the other hand,it tends to form weaker grain boundary(GB)inside polycrystalline LLZO at inadequate sintering temperature for LLZO,which can induce the intergranular failure of SE during the growth of Li filament inside the unavoidable defect on the interface of ***,increasing the strength of GB,refining the grain to 0.4μm,and precluding the interfacial defect are suggested to postpone the electro-chemo-mechanical failure of SE with weak ***,the advanced sintering techniques to lower the co-sintering temperature for both NCM-LLZO composite cathode and LLZO SE can be posted out to realize the viability of state-of-the-art ASLMBs with higher energy density as well as the guaranteed safety.

关键词： All-solid-state lithium metal battery LiNi_(0.5C)o_(0.2)Mn_(0.3)O_(2)-Li7La_(3)Zr_(2)O_(12)composite cathode co-sintering Lithium metal anode Electro-chemo-mechanical failure

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Improvement of luminescent stability from carbon nanotube field emission display based on printed CNT film

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Science China(Technological Sciences) 2006年第3期49卷 283-290页

作者： ZENG Fanguang ZHU Changchun LIU Xinghui LIU Weihua School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710049 China School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710049 China School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710049 China School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710049 China

Aiming at the influences of poor contact at carbon nanotube (CNT)/electrode interface on luminescence stability in printed CNT film, a new co-sintering process for cathode fabrication was presented to improve the luminescent stability of fully printed CNT-FED. By co-sintering the printed silver and CNT layers, CNTs geometrically matched with Ag surface and/or embedded into Ag layer at the bottom of the co-sintered film, large CNTs block and bulk silver nested each other at the top of the co-sintered film. All these structures increased the contact area at CNT/Ag interface, which could increase the probability of forming ohmic contact at CNT/Ag interface. The luminescent stability of printed CNT-FED with co-sintered cathode could be improved as 5.6 times high as that of common devices.

关键词： printed CNT films, field emission display, luminescent stability, co-sintering process.

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Densification behavior of yttria-stabilized zirconia powders for solid oxide fuel cell electrolytes

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Journal of Advanced Ceramics 2018年第4期7卷 325-335页

作者： Dhruba PANTHI Nader HEDAYAT Yanhai DU college of Aeronautics and Engineering Kent State University Department of Engineering Technology Kent State University at Tuscarawas

Yttria-stabilized zirconia(YSZ) is the most common electrolyte material for solid oxide fuel cells. Herein, we conducted a comparative study on the densification behavior of three different kinds of commercial 8 mol% YSZ powders:(i) TZ-8Y(Tosoh, Japan),(ii) MELox 8Y(MEL Chemicals, UK), and(iii) YSZ-HT(Huatsing Power, China). The comparison was made on both the selfsupporting pellets and thin-film electrolytes coated onto a NiO–YSZ anode support. For the pellets, MELox 8Y showed the highest densification at lower sintering temperatures with 93% and 96% of the theoretical density at 1250 and 1300 ℃, respectively. Although YSZ-HT showed a higher sintering rate than TZ-8Y, a sintering temperature of 1350 ℃ was required for both the powders to reach 95% of the theoretical density. For the thin-film electrolytes, on the other hand, YSZ-HT showed the highest sintering rate with a dense microstructure at a co-sintering temperature of 1250 ℃. Our results indicate that besides the average particle size, other factors such as particle size distribution and post-processing play a significant role in determining the sintering rate and densification behavior of the YSZ powders. Additionally, a close match in the sintering shrinkage of the electrolyte and anode support is important for facilitating the densification of the thin-film electrolytes.

关键词： yttria-stabilized zirconia (YSZ) SOFC electrolyte densification shrinkage co-sintering

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